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Finding the Fourth Proportional to 255,700.61, 383,661.60 and 137,233.52

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Solution

The fourth proportional to 255,700.61, 383,661.60 and 137,233.52 is: 205,909.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,700.61 : 383,661.60 = 137,233.52 : x
  2. Step 2: Convert to fraction form
    255,700.61/383,661.60 = 137,233.52/x
  3. Step 3: Cross multiply
    255,700.61x = 383,661.60 × 137,233.52
  4. Step 4: Simplify right side
    255,700.61x = 52,651,229,252.36
  5. Step 5: Solve for x
    x = 52,651,229,252.36/255,700.61
  6. Step 6: Final answer
    x = 205,909.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.